## Conversion formula

The conversion factor from decimeters to millimeters is 100, which means that 1 decimeter is equal to 100 millimeters:

1 dm = 100 mm

To convert 17.2 decimeters into millimeters we have to multiply 17.2 by the conversion factor in order to get the length amount from decimeters to millimeters. We can also form a simple proportion to calculate the result:

1 dm → 100 mm

17.2 dm → L(mm)

Solve the above proportion to obtain the length L in millimeters:

L(mm) = 17.2 dm × 100 mm

L(mm) = 1720 mm

The final result is:

17.2 dm → 1720 mm

We conclude that 17.2 decimeters is equivalent to 1720 millimeters:

17.2 decimeters = 1720 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.00058139534883721 × 17.2 decimeters.

Another way is saying that 17.2 decimeters is equal to 1 ÷ 0.00058139534883721 millimeters.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that seventeen point two decimeters is approximately one thousand seven hundred twenty millimeters:

17.2 dm ≅ 1720 mm

An alternative is also that one millimeter is approximately zero point zero zero one times seventeen point two decimeters.

## Conversion table

### decimeters to millimeters chart

For quick reference purposes, below is the conversion table you can use to convert from decimeters to millimeters

decimeters (dm) millimeters (mm)
18.2 decimeters 1820 millimeters
19.2 decimeters 1920 millimeters
20.2 decimeters 2020 millimeters
21.2 decimeters 2120 millimeters
22.2 decimeters 2220 millimeters
23.2 decimeters 2320 millimeters
24.2 decimeters 2420 millimeters
25.2 decimeters 2520 millimeters
26.2 decimeters 2620 millimeters
27.2 decimeters 2720 millimeters